Drilled Slotted Brake Rotors + Ceramic Pads Kit For 2009-2014 Subaru WRX STI Package Includes 4 Brake Rotors And 8 Ceramic Brake Pads Precision Drilled Holes For Maximum Heat Dissipation Countersunk To Reduce Heat Stress And Cracks Diamond Slotted To Increase Brake Pads Bite Diamond Slots Acts As A Rotor Wear Indicator